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Explain Which of the below is not a subinterface of Queue?

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Which of the below is not a subinterface of Queue? (a) BlockingQueue (b) BlockingEnque (c) TransferQueue (d) BlockingQueue The question was asked in an online interview. My doubt is from Data Structures-Queue in division java.util – The Collections Framework of Java Select the correct answer from above options

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The correct answer is (b) BlockingEnque To explain I would say: BlockingQueue, TransferQueue and BlockingQueue are subinterfaces of Queue.

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